Sarcopenia Risk Calculator
SARC-F screening with grip strength, gait speed, and calf circumference for EWGSOP2 sarcopenia staging.
Medical Disclaimer
This calculator is for informational and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. Never disregard professional medical advice or delay seeking it because of results from this tool.
Inputs
Results
SARC-F score (0-10)
0
How to Use This Calculator
- Enter the SARC-F questionnaire scores for strength, assistance walking, rise from chair, stair climbing, and falls.
- Enter grip strength in kg and gait speed in m/s if measured.
- Review the Total SARC-F Score — a score of 4 or higher suggests probable sarcopenia.
- Check Muscle Mass and Strength classification to determine severity.
- Use the result to initiate resistance training, protein supplementation, and physical therapy referral.
What each input means
- Strength Difficulty
- Difficulty lifting/carrying 10 lbs.
- Assistance Walking
- Difficulty walking across a room.
- Rise from Chair
- Difficulty rising from a chair.
- Climb Stairs
- Difficulty climbing 10 stairs.
- Falls in Past Year
- Number of falls in the past year.
- Grip strength
- Measured handgrip strength in kg. Low: <27 kg (men), <16 kg (women).
- Gait speed
- Usual gait speed over 4m. <0.8 m/s indicates severe sarcopenia.
- Calf circumference
- Maximum calf circumference. <31 cm suggests low muscle mass.
- Sex
- Biological sex. Affects grip strength cutoffs.
- Age
- Patient age in years.
What each result means
- SARC-F score (0-10)
- SARC-F questionnaire total. >= 4 suggests sarcopenia.
- SARC-CalF score
- SARC-F plus calf circumference adjustment (adds 10 if calf < 31 cm).
- Sarcopenia stage (0-3)
- EWGSOP2: 0 = none, 1 = probable, 2 = confirmed, 3 = severe.
- Grip strength vs cutoff
- Grip strength as percentage of sex-specific cutoff threshold.
- Gait speed vs cutoff
- Gait speed as percentage of 0.8 m/s threshold.
- Composite risk score (0-100)
- Overall sarcopenia risk combining all assessments.
- 1-year functional decline risk
- Estimated probability of significant functional decline over the next year.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersStrength Difficulty = 0, Assistance Walking = 0, Rise from Chair = 0, Climb Stairs = 0 = 10 input(s) provided
- Calculate SARC-F scoreSARC-F score0 = 0
- Calculate SARC-CalF scoreSARC-CalF score0 = 0
- Calculate Sarcopenia stage1 = 1
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